Frequently Asked Questions

Do you have special plans for open source projects,
non-profits, groups of friends, and other non-commercial
entities?

Yes! Zulip Cloud Premium is free for open source
projects and a wide variety of non-commercial
entities. We also often offer steep discounts to
educational institutions, and in other scenarios where
users are not being paid a salary. Just contact
sales@zulipchat.com and we’d be happy to discuss your
situation!

Yes! Some of our biggest fans have hundreds or thousands
of users, including Fortune 500 companies like Akamai,
and open source communities like
The
Recurse Center. If you'd like to see a large Zulip
in action, the
Zulip
community server has thousands of accounts and hundreds of weekly active users, and is run on a single machine with 8GB of RAM.

Can I pay by credit card and/or invoice?

You can always use a credit card to pay, and we can bill
by invoice for amounts over $1000.

Do you prorate accounts that aren’t being actively used?

Yes! We don’t want to charge you for a service you
aren't actually using. We prorate by the day, and only
charge for a user if they have logged on in the last two
weeks, even if they haven’t explictly been deactivated.

If you start on the Premium plan and drop to Free, we
will credit your account for the time you have left,
that you can use when reactivating your Premium plan in
the future.

Can I start on Zulip Cloud and later move to On-Premise?

Yes! Our high
quality export
and import tools ensure you can always move
from our hosting to yours (and back). If
you’d like to do a migration, email
support@zulipchat.com and we'll get you started!

Who can I contact if I have further questions?

Stop by the
Zulip
community server to see Zulip in action and
chat with the developers, or shoot us an email at
sales@zulipchat.com!

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Free and open source

See below*

* On Mattermost's licensing: The components of
Mattermost are, technically, released under various
open source licenses.
However, Mattermost's
licensing and trademark policy forbids
redistributing patched versions of Mattermost without
renaming the project. This means, for
example, that projects like Debian will never be able to include a
Mattermost server package.